body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #f6f6f6 0% 0% no-repeat padding-box !important;
  opacity: 1;
  overflow-y: scroll;
}

html {
  height: 100% !important;
}

body {
  height: 100% !important;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New",
    monospace;
}

.back1 {
  position: fixed;
  bottom: 0;
  left: 100px;
  z-index: 1;
}

.back2 {
  position: fixed;
  bottom: 0;
  right: 100px;
  z-index: 1;
}